When Lu Mingyuan unfolded the yellowed fragment of "The Classic of Mountains and Seas", the rules of the entire world began to collapse.
As a graduate student in the Department of Archeology, he thought it was just an ordinary cultural relic left by his grandfather, until the cockroach on the scroll suddenly swam into the campus artificial lake, the nine-tailed red fox squatted on the roof of the girls' dormitory, and the girl in the white dress who always came to the library had gilded light shining deep in her pupils.
It turns out that ancient myths have never disappeared, they are just sealed in the cracks of the real world. At this moment, the "building wood" that maintains the two worlds is breaking, and the aura of the mountain and sea worlds is pouring into the modern city through the cracks. What's even more frightening is that those beings recorded as "auspicious beasts" began to show their ferocity after losing their restraints.
Lu Mingyuan discovered that he could absorb the characteristics of strange beasts through the mysterious scroll: the power of water control of the worm, the power of transformation... Every time he uses the ability, the corresponding emblem of the Book of Mountains and Seas will appear on his arm. But as his strength grew, the witch blood in his body was also awakening, and the ancient memory that had been deliberately erased gradually became clear: his ancestors were the sinners who caused the separation of the two worlds.
Now, Shanhaisi's agents are searching for "abnormal creatures" throughout the city. The mythical beasts are vying to devour this "last guardian", and the woman in mysterious clothes who always appears in dreams seems to be related to the ultimate secret sealed in the picture scroll...
When only one of the two worlds can be saved, will Lu Mingyuan, who holds the world key, become the destroyer or the savior?